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Methyl B12 Contains the activated form of B12, bypassing the body's methylation process for immediate use
A credible COA should include HPLC purity above 98%, mass spectrometry confirmation of the correct molecular weight for the specified salt or free acid form, endotoxin testing documented, and heavy metal screening, all from a named third-party ISO-accredited lab
References Gadde K.M., et al., Obesity: Pathophysiology and Management
it makes it slower to degrade under certain conditions, particularly enzymatic ones
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